  * provide tonic feature "tls-webpki-roots"
    when crate "webpki-roots" is in Debian
  * provide tonic-build feature cleanup-markdown
    when crate "prost-build" provides feature cleanup-markdown
    <https://bugs.debian.org/1076079>
  * check test codec::prost::tests::encode_too_big
    when not panicking on architectures armel armhf i386
    <https://github.com/hyperium/tonic/issues/1771>
